The final flight of the space shuttle Endeavor on September 21, 2012 as it rode "piggy back" on a Boeing 747 over the Golden Gate Bridge. Notice it's ascot a F16 (I believe).

"September 21, 2012 was a beautiful sunny day," says Penman. "I scouted out my location for 90 minutes before Endeavour flew over. I wanted to find some green foliage to fill in the lower foreground rather than the black asphalt that surrounded me. I knew I was going to witness something special."